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Chemical compatibility of solid oxide fuel cell air electrode Pr4Ni3O10±δ with commercial electrolytes.

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Title: Chemical compatibility of solid oxide fuel cell air electrode Pr4Ni3O10±δ with commercial electrolytes.
Authors: Tagarelli, V. E.1 (AUTHOR), Vega‐Castillo, J.2,3 (AUTHOR), Montenegro‐Hernández, A.1,2 (AUTHOR) alejandra.montenegro@gmail.com
Source: Fuel Cells. Apr2024, Vol. 24 Issue 2, p100-107. 8p.
Subjects: Solid oxide fuel cell electrodes, Solid oxide fuel cells, Powders, Electrolytes, Superionic conductors
Abstract: The chemical reactivity between Pr4Ni3O10±δ (3‐PNO) electrodes and Y0.08Zr0.92O1.96 (YSZ), Ce0.9Gd0.1O1.95 (GDC), and La0.9Sr0.1Ga0.8Mg0.2O2.85 (LSGM) electrolytes was analyzed by electrochemical impedance spectroscopy and X‐ray diffraction. 3‐PNO powders were synthesized by two different chemical routes, one of them uses hexamethylenetetramine (HMTA) as a complexing agent (route A) while the other citrates (route B). The samples observed by scanning electron microscopy presented different microstructures; route A powders present small submicronic grains with an open microstructure while route B powders are formed by larger well‐connected grains. The polarization resistance (RP) values for 3‐PNO/YSZ cells are one order of magnitude higher than those of 3‐PNO/GDC and 3‐PNO/LSGM cells. The RP for both cells 3‐PNO/GDC and 3‐PNO/LSGM and its evolution in time suggest that chemical reactivity takes place during the adhesion treatment and electrochemical measurements. The microstructure plays a crucial role in RP and the degradation rate; 3‐PNO obtained by route A (3‐PNO‐HMTA) exhibits the best electrochemical performance since these powders present a well‐loose morphology and a large exposed area. However, this fact makes them active chemically, so the increase of RP with time is slower for 3‐PNO electrodes prepared by route B (3‐PNO‐Cit), since the rate of chemical reactivity with the electrolyte is slower. [ABSTRACT FROM AUTHOR]
Copyright of Fuel Cells is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Chemical compatibility of solid oxide fuel cell air electrode Pr<subscript>4</subscript>Ni<subscript>3</subscript>O<subscript>10±δ</subscript> with commercial electrolytes.
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  Data: <searchLink fieldCode="AR" term="%22Tagarelli%2C+V%2E+E%2E%22">Tagarelli, V. E.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Vega‐Castillo%2C+J%2E%22">Vega‐Castillo, J.</searchLink><relatesTo>2,3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Montenegro‐Hernández%2C+A%2E%22">Montenegro‐Hernández, A.</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> alejandra.montenegro@gmail.com</i>
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  Data: <searchLink fieldCode="JN" term="%22Fuel+Cells%22">Fuel Cells</searchLink>. Apr2024, Vol. 24 Issue 2, p100-107. 8p.
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  Data: <searchLink fieldCode="DE" term="%22Solid+oxide+fuel+cell+electrodes%22">Solid oxide fuel cell electrodes</searchLink><br /><searchLink fieldCode="DE" term="%22Solid+oxide+fuel+cells%22">Solid oxide fuel cells</searchLink><br /><searchLink fieldCode="DE" term="%22Powders%22">Powders</searchLink><br /><searchLink fieldCode="DE" term="%22Electrolytes%22">Electrolytes</searchLink><br /><searchLink fieldCode="DE" term="%22Superionic+conductors%22">Superionic conductors</searchLink>
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  Label: Abstract
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  Data: The chemical reactivity between Pr4Ni3O10±δ (3‐PNO) electrodes and Y0.08Zr0.92O1.96 (YSZ), Ce0.9Gd0.1O1.95 (GDC), and La0.9Sr0.1Ga0.8Mg0.2O2.85 (LSGM) electrolytes was analyzed by electrochemical impedance spectroscopy and X‐ray diffraction. 3‐PNO powders were synthesized by two different chemical routes, one of them uses hexamethylenetetramine (HMTA) as a complexing agent (route A) while the other citrates (route B). The samples observed by scanning electron microscopy presented different microstructures; route A powders present small submicronic grains with an open microstructure while route B powders are formed by larger well‐connected grains. The polarization resistance (RP) values for 3‐PNO/YSZ cells are one order of magnitude higher than those of 3‐PNO/GDC and 3‐PNO/LSGM cells. The RP for both cells 3‐PNO/GDC and 3‐PNO/LSGM and its evolution in time suggest that chemical reactivity takes place during the adhesion treatment and electrochemical measurements. The microstructure plays a crucial role in RP and the degradation rate; 3‐PNO obtained by route A (3‐PNO‐HMTA) exhibits the best electrochemical performance since these powders present a well‐loose morphology and a large exposed area. However, this fact makes them active chemically, so the increase of RP with time is slower for 3‐PNO electrodes prepared by route B (3‐PNO‐Cit), since the rate of chemical reactivity with the electrolyte is slower. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Fuel Cells is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1002/fuce.202300176
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        Text: English
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        PageCount: 8
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      – SubjectFull: Solid oxide fuel cell electrodes
        Type: general
      – SubjectFull: Solid oxide fuel cells
        Type: general
      – SubjectFull: Powders
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      – SubjectFull: Electrolytes
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      – SubjectFull: Superionic conductors
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      – TitleFull: Chemical compatibility of solid oxide fuel cell air electrode Pr4Ni3O10±δ with commercial electrolytes.
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            NameFull: Tagarelli, V. E.
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            NameFull: Vega‐Castillo, J.
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            NameFull: Montenegro‐Hernández, A.
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            – D: 01
              M: 04
              Text: Apr2024
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              Y: 2024
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